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  1. #1
    CHAD IBADTON's Avatar
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    Athena stage 2 help

    I was running 8220 on stock impeller cold air Athena stock map went to stage 2 map fuel reg static 65 psi and 12.5-20 set back mod sf pitch impeller only at 7800 and don't feel right. Like it has a growl at mid rpm. 13rxpx


  2. #2
    Mod less, ride more! troyheb's Avatar
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    Quote Originally Posted by IBADTON View Post
    I was running 8220 on stock impeller cold air Athena stock map went to stage 2 map fuel reg static 65 psi and 12.5-20 set back mod sf pitch impeller only at 7800 and don't feel right. Like it has a growl at mid rpm. 13rxpx
    Try the stock prop. Also may be running rich.

  3. #3
    CHAD IBADTON's Avatar
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    Troy that was my thoughts. Is a 20 more or less rpm than 19 can't remember ?

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    Mod less, ride more! troyheb's Avatar
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    A 20 pitch will bring down your rpm's vs a 19 pitch.

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